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一种电机支撑梁橡胶垫的改进
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作者 王喜利 李阳 张春良 《城市轨道交通研究》 北大核心 2013年第2期112-115,共4页
分析了广州地铁4号线、5号线地铁车辆电机支撑梁橡胶垫在使用中出现的永久变形过大、橡胶破坏现象的原因,针对性地对上、下橡胶垫结构和橡胶自由面进行了优化,选用了蠕变性能更好的异戊橡胶。通过试验验证表明,新产品能够满足要求的静... 分析了广州地铁4号线、5号线地铁车辆电机支撑梁橡胶垫在使用中出现的永久变形过大、橡胶破坏现象的原因,针对性地对上、下橡胶垫结构和橡胶自由面进行了优化,选用了蠕变性能更好的异戊橡胶。通过试验验证表明,新产品能够满足要求的静态轴向刚度,且在永久变形和疲劳性能方面均远优于老产品。 展开更多
关键词 电机支撑梁 橡胶 永久变形 橡胶自由面 疲劳寿命
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High productive technique for polishing free surface with elastic ball type wheel on grinding center 被引量:1
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作者 吴晓君 孙树栋 《Journal of Shanghai University(English Edition)》 CAS 2007年第6期603-606,共4页
Polishing is an important finishing process in die and mold manufacturing. Hand polishing takes long time and much labor. Efforts are made to automate the polishing process while keeping accuracy. Recently grinding ce... Polishing is an important finishing process in die and mold manufacturing. Hand polishing takes long time and much labor. Efforts are made to automate the polishing process while keeping accuracy. Recently grinding centers have been developed, which are used for free surface polishing in the present work. The new polishing technique applies the same cutting locus as used in the cutting process to remove only cusp height effectively, keeping the form accuracy generated in the cutting process. 展开更多
关键词 POLISHING free surface grinding center ball type wheel die mold.
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